{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:TZ4SCUEK3SUIOPBWIOLGITXXN2","short_pith_number":"pith:TZ4SCUEK","schema_version":"1.0","canonical_sha256":"9e7921508adca8873c364396644ef76e9badff21609a81d3fec5d87f1c98a9fe","source":{"kind":"arxiv","id":"2407.00842","version":3},"attestation_state":"computed","paper":{"title":"Geometry-Dependent Defect Merging Induces Bifurcated Dynamics in Active Networks","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"cond-mat.soft","authors_text":"Fan Yang, Hao Wang, Heun Jin Lee, Matt Thomson, Rob Phillips, Shichen Liu","submitted_at":"2024-06-30T22:29:28Z","abstract_excerpt":"Cytoskeletal networks can repair defects to maintain structural integrity. However, the mechanisms and dynamics of defect merging remain poorly understood. Here we report a geometry-tunable merging mechanism in microtubule-motor networks initiated by active crosslinking. We directly generate defects using a light-controlled microtubule-motor system in O-shaped and V-shaped networks, and observe that the defects can self-close. Combining theory and experiment, we find that the V-shaped networks must overcome internal elastic resistance in order to zip up cracks, giving rise to a bifurcation of "},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2407.00842","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2024-06-30T22:29:28Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"9a8420d45b8441a8f71bfdd9d90f138e65efe31f7ccb8b31157d37e256ecb33a","abstract_canon_sha256":"1e09b3114cbb9370557b9ae7a0a4d27b85e7916a8a3a36e92b13d4d995701aa0"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T12:07:00.133512Z","signature_b64":"0lRTA2dmSMmNnyyd0pAsULHSDDg8m/spCgH5HTuf2bCmAtT2G6D9p6WcmkzUXNNNH7C9X+F4CowGeWUe65CpBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9e7921508adca8873c364396644ef76e9badff21609a81d3fec5d87f1c98a9fe","last_reissued_at":"2026-07-05T12:07:00.132924Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T12:07:00.132924Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Geometry-Dependent Defect Merging Induces Bifurcated Dynamics in Active Networks","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"cond-mat.soft","authors_text":"Fan Yang, Hao Wang, Heun Jin Lee, Matt Thomson, Rob Phillips, Shichen Liu","submitted_at":"2024-06-30T22:29:28Z","abstract_excerpt":"Cytoskeletal networks can repair defects to maintain structural integrity. However, the mechanisms and dynamics of defect merging remain poorly understood. Here we report a geometry-tunable merging mechanism in microtubule-motor networks initiated by active crosslinking. We directly generate defects using a light-controlled microtubule-motor system in O-shaped and V-shaped networks, and observe that the defects can self-close. Combining theory and experiment, we find that the V-shaped networks must overcome internal elastic resistance in order to zip up cracks, giving rise to a bifurcation of "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2407.00842","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2407.00842/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"2407.00842","created_at":"2026-07-05T12:07:00.132990+00:00"},{"alias_kind":"arxiv_version","alias_value":"2407.00842v3","created_at":"2026-07-05T12:07:00.132990+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2407.00842","created_at":"2026-07-05T12:07:00.132990+00:00"},{"alias_kind":"pith_short_12","alias_value":"TZ4SCUEK3SUI","created_at":"2026-07-05T12:07:00.132990+00:00"},{"alias_kind":"pith_short_16","alias_value":"TZ4SCUEK3SUIOPBW","created_at":"2026-07-05T12:07:00.132990+00:00"},{"alias_kind":"pith_short_8","alias_value":"TZ4SCUEK","created_at":"2026-07-05T12:07:00.132990+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/TZ4SCUEK3SUIOPBWIOLGITXXN2","json":"https://pith.science/pith/TZ4SCUEK3SUIOPBWIOLGITXXN2.json","graph_json":"https://pith.science/api/pith-number/TZ4SCUEK3SUIOPBWIOLGITXXN2/graph.json","events_json":"https://pith.science/api/pith-number/TZ4SCUEK3SUIOPBWIOLGITXXN2/events.json","paper":"https://pith.science/paper/TZ4SCUEK"},"agent_actions":{"view_html":"https://pith.science/pith/TZ4SCUEK3SUIOPBWIOLGITXXN2","download_json":"https://pith.science/pith/TZ4SCUEK3SUIOPBWIOLGITXXN2.json","view_paper":"https://pith.science/paper/TZ4SCUEK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2407.00842&json=true","fetch_graph":"https://pith.science/api/pith-number/TZ4SCUEK3SUIOPBWIOLGITXXN2/graph.json","fetch_events":"https://pith.science/api/pith-number/TZ4SCUEK3SUIOPBWIOLGITXXN2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/TZ4SCUEK3SUIOPBWIOLGITXXN2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/TZ4SCUEK3SUIOPBWIOLGITXXN2/action/storage_attestation","attest_author":"https://pith.science/pith/TZ4SCUEK3SUIOPBWIOLGITXXN2/action/author_attestation","sign_citation":"https://pith.science/pith/TZ4SCUEK3SUIOPBWIOLGITXXN2/action/citation_signature","submit_replication":"https://pith.science/pith/TZ4SCUEK3SUIOPBWIOLGITXXN2/action/replication_record"}},"created_at":"2026-07-05T12:07:00.132990+00:00","updated_at":"2026-07-05T12:07:00.132990+00:00"}